public static ICloudTableEntityRangeQuery PrepareEntityRangeQueryByPartition(
this ICloudTable table,
string partitionKey,
string[] properties)
{
Require.NotNull(table, "table");
Require.NotNull(partitionKey, "partitionKey");
return(table.PrepareEntityFilterRangeQuery(
"PartitionKey eq '{0}'".FormatString(partitionKey),
properties));
}
public static ICloudTableEntityRangeQuery PrepareEntityRangeQueryByRows(
this ICloudTable table,
string partitionKey,
string fromRowKey,
string toRowKey,
string[] properties)
{
Require.NotNull(table, "table");
Require.NotNull(fromRowKey, "fromRowKey");
Require.NotNull(toRowKey, "toRowKey");
return(table.PrepareEntityFilterRangeQuery(
"(PartitionKey eq '{0}') and (RowKey ge '{1}' and RowKey le '{2}')".FormatString(
partitionKey,
fromRowKey,
toRowKey),
properties));
}
public async Task <FetchEventsResult> FetchStreamEvents(string stream, EventStreamHeader header, StreamVersion fromVersion, int sliceSize)
{
// fromVersion already in slice
var isFetchingCompleted = false;
var nextSliceVersion = fromVersion.Increment(sliceSize - 1);
if (nextSliceVersion >= header.Version)
{
nextSliceVersion = header.Version;
isFetchingCompleted = true;
}
const string queryTemplate =
"((PartitionKey eq '{0}') and (RowKey eq 'HEAD')) or " +
"((PartitionKey eq '{0}') and (RowKey ge '{1}' and RowKey le '{2}'))";
var query = m_table.PrepareEntityFilterRangeQuery(
queryTemplate.FormatString(
stream,
fromVersion.ToString(),
nextSliceVersion.ToString()));
var queryResult = await query.ExecuteAsync();
var events = new SortedList <StreamVersion, JournaledEvent>(sliceSize);
foreach (var properties in queryResult)
{
var rowKey = (string)properties[KnownProperties.RowKey];
if (!rowKey.EqualsCi("HEAD"))
{
events.Add(StreamVersion.Parse((string)properties[KnownProperties.RowKey]), JournaledEvent.Create(properties));
}
}
return(new FetchEventsResult(isFetchingCompleted, events));
}
public static ICloudTableEntityRangeQuery PrepareEntityFilterRangeQuery(this ICloudTable table, string filter)
{
Require.NotNull(table, "table");
return(table.PrepareEntityFilterRangeQuery(filter, EmptyArray.Get <string>()));
}
